2 * This file is part of the coreboot project.
4 * Copyright (C) 2007 AMD
5 * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
22 #include <console/console.h>
24 #include <pc80/mc146818rtc.h>
26 static struct ehci_debug_info dbg_info;
28 void set_ehci_base(unsigned ehci_base)
32 if (!dbg_info.ehci_debug)
35 diff = (unsigned)dbg_info.ehci_caps - ehci_base;
36 dbg_info.ehci_regs -= diff;
37 dbg_info.ehci_debug -= diff;
38 dbg_info.ehci_caps = (void*)ehci_base;
41 void set_ehci_debug(unsigned ehci_debug)
43 dbg_info.ehci_debug = (void*)ehci_debug;
46 unsigned get_ehci_debug(void)
48 return (unsigned)dbg_info.ehci_debug;
51 static void dbgp_init(void)
53 usbdebug_init(CONFIG_EHCI_BAR, CONFIG_EHCI_DEBUG_OFFSET, &dbg_info);
56 static void dbgp_tx_byte(unsigned char data)
58 if (dbg_info.ehci_debug)
59 dbgp_bulk_write_x(&dbg_info, (char*)&data, 1);
62 static unsigned char dbgp_rx_byte(void)
64 unsigned char data = 0xff;
66 if (dbg_info.ehci_debug)
67 dbgp_bulk_read_x(&dbg_info, &data, 1);
72 static int dbgp_tst_byte(void)
74 return (int)dbg_info.ehci_debug;
77 static const struct console_driver usbdebug_direct_console __console = {
79 .tx_byte = dbgp_tx_byte,
80 .rx_byte = dbgp_rx_byte,
81 .tst_byte = dbgp_tst_byte,